Mathematics · 2024
JEE Main · 4 April 2024, Shift 1 · Q19
Three urns A, B and C contain 7 red, 5 black; 5 red, 7 black and 6 red, 6 black balls, respectively. One of the urn is selected at random and a ball…
Three urns A, B and C contain $\displaystyle 7$ red, $\displaystyle 5$ black; $\displaystyle 5$ red, $\displaystyle 7$ black and $\displaystyle 6$ red, $\displaystyle 6$ black balls, respectively. One of the urn is selected at random and a ball is drawn from it. If the ball drawn is black, then the probability that it is drawn from urn A is :
Official answer
From NTA’s final answer key for this paper.
(3)
$\displaystyle \frac{5}{18}$
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JEE Main 2024 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.